click below
click below
Normal Size Small Size show me how
Drug test phases
Drug testing phases
Question | Answer |
---|---|
Phase I | 20-100 Patients |
Phase I | Time: several months |
Phase I | Purpose: Mainly safety |
Phase II | up to several hundred patients |
Phase II | Time: Several months to 2 years |
Phase II | Purpose: Short-term safety but mainly effectiveness. |
Phase III | Several hundred to several thousand |
Phase III | Time: one to four years |
Phase III | Purpose: Safety, dosage, and effectiveness. |